Factory provide the high qulity Mgso4.7h2o,magnesium sulfate heptahydrate fertilizer grade. Mgso4.7h2o Molecular Formula: Mgso4.7h2o; Molecular weight :246.48 Characteristics: ??.white exiguous acicular or obligue-pillar crystal.Smell-less, tast-bitter .Easily efflorescent at dry air ??.specific gravity is 1.68 ???reely soluble in water;slightly soluble in ethanol and glycerin. Use: Mainly used in fertilizer ,tanning, printing and dyeing, activator, paper making and plastid. Packing and Storage : ???nitting bags with plastic liners,25kg,50kg,per bag ???stored in dry and cool p;ace,protection from sunline,rain, moisture. Name of index First class Up to standard (Mgso4.7h2o)% >=98.0 >=95% (as Cl) chrloride% <=0.30 <=0.01 Insoluble in water% <=0.10 <=0.15